126290845 has 4 divisors (see below), whose sum is σ = 151549020. Its totient is φ = 101032672.

The previous prime is 126290839. The next prime is 126290863. The reversal of 126290845 is 548092621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 548092621 = 3967 ⋅138163.

It can be written as a sum of positive squares in 2 ways, for example, as 13527684 + 112763161 = 3678^2 + 10619^2 .

It is a cyclic number.

It is not a de Polignac number, because 126290845 - 2³ = 126290837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12629080 + ... + 12629089.

It is an arithmetic number, because the mean of its divisors is an integer number (37887255).

Almost surely, 2^126290845 is an apocalyptic number.

It is an amenable number.

126290845 is a deficient number, since it is larger than the sum of its proper divisors (25258175).

126290845 is an equidigital number, since it uses as much as digits as its factorization.

126290845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25258174.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 126290845 is about 11237.9199587824. The cubic root of 126290845 is about 501.7152358701.

The spelling of 126290845 in words is "one hundred twenty-six million, two hundred ninety thousand, eight hundred forty-five".